# US 7,225,029 B2 · Implantable cardiac therapy device with dual chamber can to isolate high-frequency circuitry

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- Number: US 7,225,029 B2
- Document ID: US7225029B2
- Status: Granted
- Kind: B2
- Application number: 10/039,743
- Filed: 2001-10-26
- Published: 2003-05-01
- Granted: 2007-05-29
- Earliest claimed: 2001-10-26
- Assignees: Pacesetter, Inc.
- Inventors: Balakrishnan Shankar; Matthew Whitlock; Mark W. Kroll
- Web page: https://patentgrep.com/patent/US7225029B2

## CPC

- A61N 1/37211: {Means for communicating with stimulators}
- A61N 1/3718: {Monitoring of or protection against external electromagnetic fields or currents}
- A61N 1/37282: {characterised by communication with experts in remote locations using a network}
- Y10S 128/903: Radio telemetry
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An implantable cardiac therapy device is constructed with a housing that defines first and second chambers. The first chamber holds cardiac therapy circuitry, such as sensing and/or stimulation circuitry. The second chamber holds high-frequency circuitry that transmits and receives high-frequency signals used in communication with external devices. The dual-chamber housing allows the implantable cardiac therapy device to handle high-frequency signals in an isolated environment, thereby enabling longer range telemetry, without interfering with the cardiac therapy circuitry. The implantable cardiac therapy device can be linked to a cardiac network of knowledge workers that evaluate the data generated by the device and provide instructions to remotely program the device.

## Claims

### Claim 1

An implantable cardiac therapy device comprising:
cardiac therapy circuitry configured to perform at least one of (1) monitoring cardiac activity or (2) administering stimulation therapy;
a high-frequency transceiver adapted to transmit and receive communication signals via an antenna to enable high frequency communication; and
an enclosed casing to house both the cardiac therapy circuitry and the high-frequency transceiver, while isolating the high-frequency transceiver from the cardiac therapy circuitry,
wherein the casing comprises a first chamber to house the cardiac therapy circuitry; and
a second chamber to house the high-frequency transceiver.

### Claim 2 (depends on 1)

An implantable cardiac therapy device as recited in claim 1, wherein the communication circuitry comprises an RF transceiver.

### Claim 3 (depends on 1)

An implantable cardiac therapy device as recited in claim 1, wherein the antenna is integrated into the casing.

### Claim 4 (depends on 1)

An implantable cardiac therapy device as recited in claim 1, wherein the casing has a header to which conductive leads can be connected, the antenna residing in the header of the casing.

### Claim 5 (depends on 1)

An implantable cardiac therapy device as recited in claim 1, wherein the casing has a header to which conductive leads can be connected, and wherein the implantable cardiac therapy device further comprises
a diplexer coupled to receive high-frequency signals and low-frequency signals from the leads and to split the high-frequency signals from the low-frequency signals, the diplexer passing the high-frequency signals to the high-frequency transceiver and the low-frequency signals to the cardiac therapy circuitry.

### Claim 6 (depends on 1)

A cardiac network system comprising:
the implantable cardiac therapy device as recited in claim 1; and
a computing network to link one or more computing systems to the implantable cardiac therapy device.